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[1]牛坤,郝爱玲,薛岗,等.风幕阻止飞机喷漆厂房内可燃气体扩散的数值模拟[J].中国安全生产科学技术,2011,7(10):22-26.
　NIU Kun,HAO Ai-ling,XUE Gang,et al.Numerical simulations on the air curtain in the aircraft paint shop for preventing the toluene vapor diffusion[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2011,7(10):22-26.
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风幕阻止飞机喷漆厂房内可燃气体扩散的数值模拟()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
7
期数:
2011年10期
页码:
22-26
栏目:
学术论著
出版日期:
2011-10-30

文章信息/Info

Title:
Numerical simulations on the air curtain in the aircraft paint shop for preventing the toluene vapor diffusion
文章编号:
1673-193X(2011)-10-0022-05
作者:
牛坤; 郝爱玲; 薛岗; 聂颖
公安部天津消防研究所，天津? 300381
Author(s):
NIU Kun;  HAO Ai-ling;  XUE Gang;  NIE Ying
Tianjin Fire Research Institue of MPS, Tianjin? 300381, China
关键词:
甲苯; 扩散; 临界风幕速度; 数值模拟
Keywords:
toluene; diffusion;  critical velocity;  numerical simulation
分类号:
X932
DOI:
-
文献标志码:
A
摘要:
应用FLUENT软件中的大涡模拟模型对飞机喷漆厂房内风幕的有效性进行了研究。以某一飞机喷漆厂房内的局部为原型构建网格模型,针对若干种工况,对甲苯蒸气的扩散过程进行了数值模拟,主要研究了甲苯量和风幕速度对甲苯扩散的影响规律。对计算结果进行分析,得到了不同工况下能有效阻止甲苯扩散的临界风幕速度,研究表明在飞机喷漆厂房内设置风幕,只要风幕速度不低于该种工况下的临界风幕速度,就可有效阻止甲苯扩散,降低厂房内可燃气体的爆炸危险性。
Abstract:
Large-eddy simulation (LES) model of FLUENT was used to simulate the effectiveness of the air curtain in preventing the toluene vapor diffusion in the aircraft paint shop. Part of a aircraft paint shop was used as prototype to construct the mesh in the paper. According to different operating conditions, the diffusion of toluene vapor was simulated. And the influences of the toluene quantity and the air curtain velocity on the toluene diffusion were mainly discussed. Based on the analysis of simulation results, critical velocity of the air curtain under different operating conditions that could prevent the toluene vapor diffusion effectively was obtained. Studies showed that in the air paint shop, if the air curtain was used and its velocity was equal to or higher than the critical velocity under this kind of operation condition, it could prevent the diffusion of toluene vapor effectively. And this helped to reduce the explosion hazard of combustible gas in the workshop.

参考文献/References:

1）在飞机喷漆厂房内设置风幕系统可以有效降低可燃气体浓度及其扩散范围，有效阻止可燃气体在喷漆厂房内的大范围蔓延，减少火灾爆炸事故的发生。2）风幕速度大于临界风幕速度时就能形成有效的流动幕墙，起到阻可燃气体扩散的作用，可燃气体释放量越大，需要的临界风幕速度越大。实际应用中，可通过数值计算和试验研究的方法来确定临界风幕速度。参考文献[1] 林宏曦，王立泰. 某物流中心中庭风幕取代防火卷帘的数值模拟[J]. 消防科学与技术，2010，29(2): 115-118.Lin H X, Wang L T. Numerical simulation of fire—proof performance of the floating-window in vertical direction[J].Fire science and Technology，2010，29(2): 115-118.[2] 黄冬梅，梅秀娟，兰彬等. 防烟空气幕防烟有效性模拟实验研究[J]. 防灾减灾工程学报，2008，28(4): 497-500. Huang D M, Mei X J, Lan B. Experimental Simulation of Effectiveness of Smoke-preventing Air Curtain. Journal[J] of Disaster Prevention and Mitigation Engineering,2008，28(4): 497-500.[3] 黄冬梅，梅秀娟，兰彬等. 出口角度对防烟空气幕防烟效果影响的数值模拟[J].中国安全科学学报，2008，18(5): 55-60.Huang D M, Mei X J, Lan B. Numerical Simulation on the Influence of Air Outlet Angles on the Effectiveness of Smoke-preventing Air Curtain[J]. China Safety Science Journal，2008，18(5): 55-60.[4] 何嘉鹏，王东方，韩丽艳，等．防烟空气幕二维数学模型[J]．土木工程学报，2003，(2)：104—107．He J P，Wang D F，Han L Y，et a1．Two—dimensional mathematical model for smoke—prevention air curtain[J]．China Civil Engineering Society，2003，(2)：104—107． [5] 李兆文，何嘉鹏，陈忠信，等. 防烟空气幕性能测试研究[J] . 消防科学与技术，2005，(4)：428-429.Li Z W，He J P，Chen Z X，et a1．The research on performance test of smoke—preventing air curtains[J]．Fire Science and Technology，2005，(4)：428—429．[6] 周吉伟，霍然，胡隆华. 狭长通道内风幕挡烟效果的数值分析[J] . 安全与环境学报，2005，(4)：117-119. Zhou J W，Huo R，Hu L H．Numerical simulation on screening by air curtain in long narrow channels[J]．Journal of Safety and Environment，2005，(4)：l 17—119．[7] 秦红．空气幕常用设计计算方法应用与改进[J]．暖通空调，2002，32(5)：116—118．Qin H．Application and improvement of air curtain calculation methods[J]．Heating Ventilating & AirConditioning，2002，32(5)：116—118．[8]陈涛，梅秀娟，张文良．地下建筑中空气幕流量的计算[J]．消防技术与产品信息，2004，(2)：3-4．Chen T，Mei X J，Zhang W L．The flow calculation of air curtain in underground building[J]．Fire Technique and Products Information，2004，(2)：3-4．[9] 何嘉鹏,高层建筑防烟风幕流场分析 北京：中国建筑工业出版社，2000：546—549 He Jiapeng W D．The Analysis of Flow Fields for Smoke—Preventing Air Curtain in the High—Rise Building[M]．2000：546—549 [10] 何嘉鹏，施庆生．高层建筑防烟空气幕的数学模型及数值解[J]．南京建筑工程学院学报，1994，(2)：28—35．He J P，Shi Q S．The mathematical model and the numerical solution of a smoke—prevention air curtain[J]．Journal of Nanjing Architectural and Civil Engineering Institute，1994，(2)：28—35．

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备注/Memo

备注/Memo:
收稿日期：2011-04-08
作者简介：牛坤，助理研究员。
基金项目：公安部消防局应用创新项目（编号：2009XFCX039）
更新日期/Last Update: